[INFO] cloning repository https://github.com/davidpeklak/rust-algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davidpeklak/rust-algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidpeklak%2Frust-algorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidpeklak%2Frust-algorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9db2d5ac0cfbfe409792033d26d8f4c8aaa3e872
[INFO] testing davidpeklak/rust-algorithms against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidpeklak%2Frust-algorithms" "/workspace/builds/worker-18/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-18/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidpeklak/rust-algorithms on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/davidpeklak/rust-algorithms
[INFO] finished tweaking git repo https://github.com/davidpeklak/rust-algorithms
[INFO] tweaked toml for git repo https://github.com/davidpeklak/rust-algorithms written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] crate git repo https://github.com/davidpeklak/rust-algorithms already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_core v0.2.0
[INFO] [stderr]   Downloaded rand v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68e795a8e51c5ec4ce1a117cd21b3bb152bbe2264e435db5eb48ff7b2daf616d
[INFO] running `Command { std: "docker" "start" "-a" "68e795a8e51c5ec4ce1a117cd21b3bb152bbe2264e435db5eb48ff7b2daf616d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68e795a8e51c5ec4ce1a117cd21b3bb152bbe2264e435db5eb48ff7b2daf616d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68e795a8e51c5ec4ce1a117cd21b3bb152bbe2264e435db5eb48ff7b2daf616d", kill_on_drop: false }`
[INFO] [stdout] 68e795a8e51c5ec4ce1a117cd21b3bb152bbe2264e435db5eb48ff7b2daf616d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c6d8b0907dc9d2868a9707f538a8518c2bfdf5c68d75a656e5f93624bc90170
[INFO] running `Command { std: "docker" "start" "-a" "7c6d8b0907dc9d2868a9707f538a8518c2bfdf5c68d75a656e5f93624bc90170", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling libc v0.2.41
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling rand_core v0.2.0
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling rand v0.5.0
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling stopwatch v0.0.7
[INFO] [stderr]    Compiling algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:29:41
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=Self::Item>>;
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=Self::Item>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     l: &'a LinkedList<Item=T>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:56:41
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:65:28
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl<T> LinkedList for Box<LinkedList<Item=T>> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:72:38
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn tail<'a>(&'a self) -> Option<&LinkedList<Item=T>> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:88:41
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/lib/red_black_bst_2.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         mem::replace(&mut self.top, top);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.45s
[INFO] running `Command { std: "docker" "inspect" "7c6d8b0907dc9d2868a9707f538a8518c2bfdf5c68d75a656e5f93624bc90170", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c6d8b0907dc9d2868a9707f538a8518c2bfdf5c68d75a656e5f93624bc90170", kill_on_drop: false }`
[INFO] [stdout] 7c6d8b0907dc9d2868a9707f538a8518c2bfdf5c68d75a656e5f93624bc90170
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5287029cee383266f7d5c865228f0f7dc2a0eb898948b1c8843da9ad39558f66
[INFO] running `Command { std: "docker" "start" "-a" "5287029cee383266f7d5c865228f0f7dc2a0eb898948b1c8843da9ad39558f66", kill_on_drop: false }`
[INFO] [stderr]    Compiling algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:29:41
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=Self::Item>>;
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=Self::Item>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     l: &'a LinkedList<Item=T>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:56:41
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:65:28
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl<T> LinkedList for Box<LinkedList<Item=T>> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:72:38
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn tail<'a>(&'a self) -> Option<&LinkedList<Item=T>> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:88:41
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/lib/red_black_bst_2.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         mem::replace(&mut self.top, top);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:29:41
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=Self::Item>>;
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=Self::Item>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     l: &'a LinkedList<Item=T>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:56:41
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:65:28
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl<T> LinkedList for Box<LinkedList<Item=T>> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:72:38
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn tail<'a>(&'a self) -> Option<&LinkedList<Item=T>> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/linked_list.rs:88:41
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib/linked_list.rs:134:34
[INFO] [stdout]     |
[INFO] [stdout] 134 |     fn some_linked_list() -> Box<LinkedList<Item=i32>> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=i32>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib/linked_list.rs:153:41
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn prepend_some<'a, L>(l: L) -> Box<LinkedList<Item=i32> + 'a>
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=i32> + 'a`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/lib/red_black_bst_2.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         mem::replace(&mut self.top, top);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.96s
[INFO] running `Command { std: "docker" "inspect" "5287029cee383266f7d5c865228f0f7dc2a0eb898948b1c8843da9ad39558f66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5287029cee383266f7d5c865228f0f7dc2a0eb898948b1c8843da9ad39558f66", kill_on_drop: false }`
[INFO] [stdout] 5287029cee383266f7d5c865228f0f7dc2a0eb898948b1c8843da9ad39558f66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ea0262a383612c4cf4ea9738b8b713ba4a075c4c413599d4b18a3317338355af
[INFO] running `Command { std: "docker" "start" "-a" "ea0262a383612c4cf4ea9738b8b713ba4a075c4c413599d4b18a3317338355af", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:29:41
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=Self::Item>>;
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=Self::Item>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 36 |     l: &'a LinkedList<Item=T>
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:56:41
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:65:28
[INFO] [stderr]    |
[INFO] [stderr] 65 | impl<T> LinkedList for Box<LinkedList<Item=T>> {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:72:38
[INFO] [stderr]    |
[INFO] [stderr] 72 |     fn tail<'a>(&'a self) -> Option<&LinkedList<Item=T>> {
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:88:41
[INFO] [stderr]    |
[INFO] [stderr] 88 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/lib/red_black_bst_2.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         mem::replace(&mut self.top, top);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:29:41
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=Self::Item>>;
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=Self::Item>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 36 |     l: &'a LinkedList<Item=T>
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:56:41
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:65:28
[INFO] [stderr]    |
[INFO] [stderr] 65 | impl<T> LinkedList for Box<LinkedList<Item=T>> {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:72:38
[INFO] [stderr]    |
[INFO] [stderr] 72 |     fn tail<'a>(&'a self) -> Option<&LinkedList<Item=T>> {
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:88:41
[INFO] [stderr]    |
[INFO] [stderr] 88 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib/linked_list.rs:134:34
[INFO] [stderr]     |
[INFO] [stderr] 134 |     fn some_linked_list() -> Box<LinkedList<Item=i32>> {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=i32>`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib/linked_list.rs:153:41
[INFO] [stderr]     |
[INFO] [stderr] 153 |     fn prepend_some<'a, L>(l: L) -> Box<LinkedList<Item=i32> + 'a>
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=i32> + 'a`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/lib/red_black_bst_2.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         mem::replace(&mut self.top, top);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.28s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/algorithms-8bf1629c890932d5)
[INFO] [stdout] 
[INFO] [stdout] running 83 tests
[INFO] [stdout] test deque::tests::add_first_and_query ... ok
[INFO] [stdout] test deque::tests::construct_deque_and_query ... ok
[INFO] [stdout] test deque::tests::add_last_and_query ... ok
[INFO] [stdout] test deque::tests::filo_right ... ok
[INFO] [stdout] test deque::tests::box_to_non_null_to_box ... ok
[INFO] [stdout] test deque::tests::filo_left ... ok
[INFO] [stdout] test deque::tests::fifo_left ... ok
[INFO] [stdout] test deque::tests::fifo_right ... ok
[INFO] [stdout] test deque::tests::iter ... ok
[INFO] [stdout] test deque::tests::sizes ... ok
[INFO] [stdout] test graph::tests::test_number_of_edges ... ok
[INFO] [stdout] test graph::tests::test_adj ... ok
[INFO] [stdout] test graph::tests::test_number_of_vertices ... ok
[INFO] [stdout] test graph_alg::tests::test_breadth_is_visted ... ok
[INFO] [stdout] test graph_alg::tests::test_breadth_path_to ... ok
[INFO] [stdout] test graph_alg::tests::test_depth_is_visted ... ok
[INFO] [stdout] test linked_list::tests::mixed_construction ... ok
[INFO] [stdout] test is_sorted::test_is_sorted ... ok
[INFO] [stdout] test graph_alg::tests::test_depth_path_to ... ok
[INFO] [stdout] test linked_list::tests::iter_loop ... ok
[INFO] [stdout] test linked_list::tests::stack_construction ... ok
[INFO] [stdout] test max_pq::tests::test_heap_sort ... ok
[INFO] [stdout] test index_ops::test::vec_length ... ok
[INFO] [stdout] test linked_list::tests::iter_stack ... ok
[INFO] [stdout] test percolation::tests::percolate_1 ... ok
[INFO] [stdout] test percolation::tests::open_once ... ok
[INFO] [stdout] test linked_list::tests::heap_construction ... ok
[INFO] [stdout] test percolation::tests::open_twice ... ok
[INFO] [stdout] test insertion_sort::test::small_example ... ok
[INFO] [stdout] test percolation::tests::new_percolation_is_full ... ok
[INFO] [stdout] test max_pq::tests::test_manual_sinking ... ok
[INFO] [stdout] test merge_sort::test::merge_some ... ok
[INFO] [stdout] test merge_sort::test::merge_sort_is_sorted ... ok
[INFO] [stdout] test max_pq::tests::test_make_heap ... ok
[INFO] [stdout] test max_pq::tests::test_insert ... ok
[INFO] [stdout] test max_pq::tests::test_del_max ... ok
[INFO] [stdout] test max_pq::tests::test_is_binary_heap ... ok
[INFO] [stdout] test merge_sort::test::merge_sort_some ... ok
[INFO] [stdout] test insertion_sort::test::insertion_sort_some ... ok
[INFO] [stdout] test percolation::tests::percolate_3_z ... ok
[INFO] [stdout] test quick_sort::tests::partition_some ... ok
[INFO] [stdout] test quick_sort::tests::three_way_partition_some ... ok
[INFO] [stdout] test quick_union::tests::test_3 ... ok
[INFO] [stdout] test quick_sort::tests::test_quick_select ... ok
[INFO] [stdout] test quick_union::tests::test_3_c ... ok
[INFO] [stdout] test quick_find::tests::test_3 ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_big_tree ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_contains ... ok
[INFO] [stdout] test quick_find::tests::test_3_c ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_color_flip ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_has_right_leaning_red_links ... ok
[INFO] [stdout] test percolation::tests::percolate_3_s ... ok
[INFO] [stdout] test quick_sort::tests::three_way_quick_sort_some ... ok
[INFO] [stdout] test red_black_bst_2::tests::multiple_insertion_results_in_bst ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_black_depth ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_has_consecutive_red_links ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_from_iter ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_insert_3 ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_into_iter ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_insert_2 ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_iter ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_rotate_left ... ok
[INFO] [stdout] test quick_sort::tests::quick_sort_some ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_insert_1 ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_is_bst ... ok
[INFO] [stdout] test shell_sort::test::sorted_step ... ok
[INFO] [stdout] test step::test::index_mut ... ok
[INFO] [stdout] test step::test::len_offset ... ok
[INFO] [stdout] test weighted_quick_union::tests::test_3 ... ok
[INFO] [stdout] test weighted_quick_union::tests::test_3_c ... ok
[INFO] [stdout] test step::test::index ... ok
[INFO] [stdout] test shell_sort::test::handwritten ... ok
[INFO] [stdout] test selection_sort::test::vec_swap ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_size ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_total_depth ... ok
[INFO] [stdout] test shell_sort::test::h_generation ... ok
[INFO] [stdout] test step::test::len ... ok
[INFO] [stdout] test red_black_bst_2::tests::test_rotate_right ... ok
[INFO] [stdout] test step::test::index_offset ... ok
[INFO] [stdout] test shell_sort::test::example_from_course ... ok
[INFO] [stdout] test shell_sort::test::small_example ... ok
[INFO] [stdout] test shell_sort::test::shell_sort_some ... ok
[INFO] [stdout] test selection_sort::test::selection_sort_some ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 83 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.50s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/algorithms-a3fa5c26a6daa994)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/performance_deque.rs (/opt/rustwide/target/debug/deps/performance_deque-32edc5de52aa544d)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_performance ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.77s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/performance_heap_sort.rs (/opt/rustwide/target/debug/deps/performance_heap_sort-f78d30a50d5cb0af)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_performance ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 6.52s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr]      Running tests/performance_insertion_sort.rs (/opt/rustwide/target/debug/deps/performance_insertion_sort-b7d740151637524c)
[INFO] [stdout] test test_performance ... FAILED
[INFO] [stdout] test test_performance_partially_sorted ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test_performance stdout ----
[INFO] [stdout] Size: 1, elapsed milliseconds: 0
[INFO] [stdout] Size: 2, elapsed milliseconds: 0
[INFO] [stdout] Size: 4, elapsed milliseconds: 0
[INFO] [stdout] Size: 8, elapsed milliseconds: 0
[INFO] [stdout] Size: 16, elapsed milliseconds: 0
[INFO] [stdout] Size: 32, elapsed milliseconds: 0
[INFO] [stdout] Size: 64, elapsed milliseconds: 0
[INFO] [stdout] Size: 128, elapsed milliseconds: 0
[INFO] [stdout] Size: 256, elapsed milliseconds: 3
[INFO] [stdout] Size: 512, elapsed milliseconds: 20
[INFO] [stdout] Ratio: 6.666666666666667
[INFO] [stdout] Size: 1024, elapsed milliseconds: 49
[INFO] [stdout] Ratio: 2.45
[INFO] [stdout] Size: 2048, elapsed milliseconds: 210
[INFO] [stdout] Ratio: 4.285714285714286
[INFO] [stdout] Size: 4096, elapsed milliseconds: 822
[INFO] [stdout] Ratio: 3.914285714285714
[INFO] [stdout] Size: 8192, elapsed milliseconds: 3179
[INFO] [stdout] Ratio: 3.867396593673966
[INFO] [stdout] Size: 16384, elapsed milliseconds: 8820
[INFO] [stdout] Ratio: 2.774457376533501
[INFO] [stdout] Factor insertion sort = 2.774457376533501
[INFO] [stdout] thread 'test_performance' panicked at 'assertion failed: factor > 3.5', tests/performance_insertion_sort.rs:32:5
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x559e354ea910 - std::backtrace_rs::backtrace::libunwind::trace::h34055254b57d8e79
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stdout]    1:     0x559e354ea910 - std::backtrace_rs::backtrace::trace_unsynchronized::h8f1e3fbd9afff6ec
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x559e354ea910 - std::sys_common::backtrace::_print_fmt::h3a99a796b770c360
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x559e354ea910 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h32d1f94a80615d18
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stdout]    4:     0x559e3550d16c - core::fmt::write::h306731c068f7162c
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/fmt/mod.rs:1110:17
[INFO] [stdout]    5:     0x559e354e7755 - std::io::Write::write_fmt::h87f19b0a2cd190bc
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/io/mod.rs:1588:15
[INFO] [stdout]    6:     0x559e354eca7b - std::sys_common::backtrace::_print::h5abaa2601a852287
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stdout]    7:     0x559e354eca7b - std::sys_common::backtrace::print::h8d81445442bb638f
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stdout]    8:     0x559e354eca7b - std::panicking::default_hook::{{closure}}::hcfe804496a9fa747
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:208:50
[INFO] [stdout]    9:     0x559e354ec58c - std::panicking::default_hook::hbea8e3ccf2ba8901
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:222:9
[INFO] [stdout]   10:     0x559e354ed144 - std::panicking::rust_panic_with_hook::h7ee9e1a2d0f8975a
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:622:17
[INFO] [stdout]   11:     0x559e354ecbf7 - std::panicking::begin_panic_handler::{{closure}}::h8ab3b4491718b2c7
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:517:13
[INFO] [stdout]   12:     0x559e354eae0c - std::sys_common::backtrace::__rust_end_short_backtrace::hd489062ffa586a9f
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stdout]   13:     0x559e354ecb89 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:515:5
[INFO] [stdout]   14:     0x559e35469651 - core::panicking::panic_fmt::hca6330e3e14086b4
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/panicking.rs:92:14
[INFO] [stdout]   15:     0x559e3546959d - core::panicking::panic::h1a48d878ff3dcd40
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/panicking.rs:50:5
[INFO] [stdout]   16:     0x559e3546b97f - performance_insertion_sort::test_performance::hfb07a46940fbc1b3
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/performance_insertion_sort.rs:32:5
[INFO] [stdout]   17:     0x559e3546b88a - performance_insertion_sort::test_performance::{{closure}}::hbd8bad2f7b8b4498
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/performance_insertion_sort.rs:28:1
[INFO] [stdout]   18:     0x559e3546b01e - core::ops::function::FnOnce::call_once::hafb32fdeb7a77128
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   19:     0x559e35494833 - core::ops::function::FnOnce::call_once::h152e7e439ff59e19
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   20:     0x559e35494833 - test::__rust_begin_short_backtrace::h0908f3b1fdbb72ab
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/test/src/lib.rs:577:5
[INFO] [stdout]   21:     0x559e354932f0 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf6d2a51e5587546c
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/alloc/src/boxed.rs:1575:9
[INFO] [stdout]   22:     0x559e354932f0 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h8af660f3a89ef593
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panic.rs:347:9
[INFO] [stdout]   23:     0x559e354932f0 - std::panicking::try::do_call::hd36aef60f84b6d36
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:401:40
[INFO] [stdout]   24:     0x559e354932f0 - std::panicking::try::h9932b4480e69817c
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:365:19
[INFO] [stdout]   25:     0x559e354932f0 - std::panic::catch_unwind::h6aa177099cfff5f8
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panic.rs:434:14
[INFO] [stdout]   26:     0x559e354932f0 - test::run_test_in_process::h5884d6f2d99e20c3
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/test/src/lib.rs:600:18
[INFO] [stdout]   27:     0x559e354932f0 - test::run_test::run_test_inner::{{closure}}::h6fdc58c6d5f5b6e3
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/test/src/lib.rs:492:39
[INFO] [stdout]   28:     0x559e3546c9a2 - test::run_test::run_test_inner::{{closure}}::h408365d67a78ade8
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/test/src/lib.rs:519:37
[INFO] [stdout]   29:     0x559e3546c9a2 - std::sys_common::backtrace::__rust_begin_short_backtrace::hb560b77c4f701523
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stdout]   30:     0x559e35470558 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hf2e7831dad93c597
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/thread/mod.rs:481:17
[INFO] [stdout]   31:     0x559e35470558 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd2e08783d8be4d02
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panic.rs:347:9
[INFO] [stdout]   32:     0x559e35470558 - std::panicking::try::do_call::h062597b7acfd6b82
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:401:40
[INFO] [stdout]   33:     0x559e35470558 - std::panicking::try::h0d7b79db04c14552
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:365:19
[INFO] [stdout]   34:     0x559e35470558 - std::panic::catch_unwind::hb01a0b5e7c8cd43b
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panic.rs:434:14
[INFO] [stdout]   35:     0x559e35470558 - std::thread::Builder::spawn_unchecked::{{closure}}::h5bde48cc887e0d1e
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/thread/mod.rs:480:30
[INFO] [stdout]   36:     0x559e35470558 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h745ea30807a29e55
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   37:     0x559e354f1c67 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7ece6cfefaff1005
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/alloc/src/boxed.rs:1575:9
[INFO] [stdout]   38:     0x559e354f1c67 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hb8b48e55c21f193e
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/alloc/src/boxed.rs:1575:9
[INFO] [stdout]   39:     0x559e354f1c67 - std::sys::unix::thread::Thread::new::thread_start::h8c7c4450dba62914
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys/unix/thread.rs:71:17
[INFO] [stdout]   40:     0x7f4c44b8d609 - start_thread
[INFO] [stdout]   41:     0x7f4c4495f293 - clone
[INFO] [stdout]   42:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test_performance
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 15.06s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--test performance_insertion_sort'
[INFO] running `Command { std: "docker" "inspect" "ea0262a383612c4cf4ea9738b8b713ba4a075c4c413599d4b18a3317338355af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea0262a383612c4cf4ea9738b8b713ba4a075c4c413599d4b18a3317338355af", kill_on_drop: false }`
[INFO] [stdout] ea0262a383612c4cf4ea9738b8b713ba4a075c4c413599d4b18a3317338355af
